Add comment highlight when target from url (#9047)

* Add comment highlight css

* Add js to remove highlight on click outside

* Improve refresh page on click outside

* Use location.hash property to remove target

* Handle click ONLY clicked outside of 'targetted comment' (not other comment)

* Remove unnecessary checks and simply code

* Combine hash and setState to remove target path

web_src/less/_repository.less

@@ -844,6 +844,10 @@
                     }
                 }
 
+                &:target > .content {
+                    box-shadow: 0 0 10px #8c8c8c;
+                }
+
                 .ui.form {
                     .field:first-child {
                         clear: none;